Camera Movements:
- Middle mouse button + dragging = moving around;
- Left mouse button = select village areas;
- Right mouse button = reset the camera position where the selected area is.
Play and win:
Move your villagers (using WASD or arrow keys) and collect shields scraps (those white shields). When you have enough shields scraps you can place real shields on the map by entering the Shield Placement Mode, pressing F. These shields are a safe place for your villagers: there, the fire won't come. To save permanently the village (and win the game) you have to collect 3 special runes. Runes appear when you place a specific number of shields (indicated in the bottom right part of the screen).
Hope this helps!